Read a 100-page book, nine pages a day, starting on August 22nd. Can he finish the book by September 1st?
Read a 100-page book, nine pages a day, starting on August 22nd. Can he finish the book before school starts on September 1st? It was difficult to guarantee that he could finish reading the book before school started on September 1st because reading only nine pages a day was relatively slow. It would take a few days to finish reading the book, depending on the reading speed and time. If one could read nine pages a day and maintain a high efficiency reading habit, it would take about 10-15 days to finish the book before school started. Of course, this was only a rough estimate. The exact time needed to be calculated according to the actual situation.
Dongdong reads 108 pages of a book, reading 9 pages a day, starting from August 20. He can finish reading this book before school starts on September 1
Dongdong read a book with 108 pages, nine pages a day, starting from August 20th. He could finish the book before school started on September 1st. Calculating that it would take 108 pages to read 9 pages per day, 9 pages per day = 12 days. Since it started on August 20th, one more day was needed: 108 pages/9 pages/day + 1 day = 12 days Therefore, Dongdong needed 12 days to finish reading this book. He could focus on speeding up his reading in the last few days before school started and try to meet the deadline.
A book has a page, read 15 pages a day, and finish it in a week
A book has a page A. Reading 15 pages a day in a week is just enough. Assuming a book has page A and 15 pages a day, the number of days needed to finish the book in a week is: a ÷ 15 = (a + a) ÷ 2 = 2a / 2 + a / 2 Transferring items can be sorted out: 2a / 2 = a + a / 2 To simplify it: a = 4 Therefore, a book had four pages, and 15 pages a day was just enough to finish it in a week.
A book with 297 pages, starting from February 18th, 2020. Can you finish it before March 1st?
He couldn't read 297 pages of a 297-page book every day to finish it before March 1st. It would take about 57 days to finish the book at the rate of 30 pages per day. However, since there were 28 days in February, it was necessary to divide the time by 7: 57 ÷ 7 = 8 6 Therefore, he needed to start reading on the eighth day after February 18th (which was March 1st) to finish the book before March 1st.
Xiaoli reads a 150-page storybook from August 15th. If he reads eight pages a day until September 1st before school starts, Xiaoli
Xiao Li read a 150-page storybook and read eight pages a day until September 1st, before school started, she had read a total of 150 x 8 + 1 = 1125 pages. In order to catch up with the progress of her studies before school started, Xiao Li could do some revision and preparation work before school started. She could read notes on chapters and topics, or review knowledge related to exams. In addition, Xiaoli could also try to read some short stories or light novels to improve her reading speed and comprehension ability.
Xiaodong read a book. On the first day, he read 3/5 of the book, and the next day he read 20 pages. At this time, he had read the number of pages in the book.
Xiao Dong read 3/5 of the book on the first day, which was 0.6 times the volume of the book. The next day, he read another 20 pages, which was equivalent to 1/5 of the entire book, which was 0.2 times the volume of the entire book. Therefore, the number of pages Little Dong had read was: The number of pages read = the volume of the book x the number of days read-the total number of pages = 06 × volume of the book × 1 - 02 × volume of the book = 02 × the volume of the book Since the total number of pages in the book did not change, the number of pages that Xiao Dong had read was 0.2 times that of the book.
Wang Jun read a book, 24 pages a day. He finished half of the book in six days, and then read 12 more pages a day, just in time to finish the book. The loan date of this book…
The loan period for this book was 30 days.
A 600-page book. Every day, he would read one more page than the day before, and he would finish it in 16 days. How many pages did you read on the last day?
If the number of pages of the book is x, then the first day is x/page, the second day is (x/page)/2, and so on, the 15th day is (x/page)/16. Because I read one more page every day than the day before, the number of pages I read in 16 days can be expressed as: (x/page)/16 + (x/page)/17 + (x/page)/18 + + (x/page)/15 This is a geometric sequence and the sum is x/page. Therefore, the common ratio of this exponential series is 16, and the first term is x/page. By replacing x/page with the first term of this exponential sequence, we get: (x/page)/16 + (x/page)/17 + (x/page)/18 + + (x/page)/15 = x/page To simplify it: (16x/15)/16 = x Solution: x = 600 Therefore, the book had 600 pages.
Xiao Ming read a book. On the first day, he read 10% of the book, the second day, he read 35%, and the third day, he read 44 pages. This book…
How many pages are there in this book? According to the title, Xiaoming read 10% of the book on the first day, which was 10% of the book divided by 100% = 1/10 pages. Xiao Ming read 35% of the book the next day, which was 35% of the book divided by 100% = 035 pages. Xiao Ming read 44 pages of the book on the third day, so the number of pages in the book can be calculated by the following formula: 1 ÷ (1/10 + 035 + 1/10) = 44 Solve the equation: Number of pages in the book = 44 × 100%/(1 + 035 + 1) = 3520 Therefore, this book had a total of 3520 pages.
A 600-page storybook. Nono would read 28 pages a day. Could he finish it in 19 days?
Reading 28 pages a day in 19 days can finish a 600-page storybook, but you need to pay attention to the following points: 1 The total number of pages in a storybook is 600, and reading 28 pages a day is actually only 28/2 = 14 days to finish reading each page. Therefore, he needed to divide 19 days by 14 days to determine the total number of pages he could read. The answer was that they could finish reading it, but they needed more time. If you read 28 pages a day, you would need 14 days to finish the story book. If Nono only reads 1 page in the remaining 14 days, she will not be able to finish the storybook. Therefore, Nono had to ensure that he could read a certain number of pages every day to ensure that he could read the entire story book. Reading 28 pages a day would take 14 days to finish a 600-page storybook. In the remaining 14 days, he had to ensure that he could read a certain number of pages every day in order to read the storybook completely.
He was going to read a 158-yuan story book, but he read 16 pages a day. If he started from July 25th to August 3rd, would he be able to finish reading it?
The total number of days required to finish reading a 158-page storybook is: 158 pages/16 pages/day = 105 days There were 30 days from July 25th to August 3rd, so: 30 days/105 days/day = 2875 Because the total number of pages per day was 16, so: 158 pages/16 pages/day = 105 days Therefore, he had to read 16 pages a day from July 25th to August 3rd to finish the 158 pages of the storybook.